EndurastarJ4K50 and N4K50

Specifications

Endurastar J4K50

Endurastar N4K50

Hitachi quality and service

Model(s)

HEJ425050F9AT00

HEJ425040F9AT00

Hitachi Endurastar hard disk drives are designed

 

 

 

 

 

HEJ425030F9AT00

HEN425050F9AT00

to the highest quality standards and contain field-

 

 

 

 

 

HEN425040F9AT00

HEN425030F9AT00

proven components. Hitachi provides worldwide

 

 

 

 

 

 

 

 

 

 

Interface

 

ATA-6

f

 

technical support and integration services to

 

 

 

 

 

 

 

 

 

 

Capacity (GB)

1

 

50 / 40 / 30

f

 

enable global customers to bring their products

Sector size (variable, Bytes/sector)

512

f

 

to market quickly.

 

 

 

 

 

 

 

 

 

 

 

Recording zones

24

f

 

Hitachi drives are backed by an array of technical

 

 

 

 

 

 

 

 

 

 

Data heads (physical)

2

f

 

 

support and services, which may include

 

 

 

 

 

 

 

 

 

 

Data Disks

1

f

 

 

customer and integration assistance. Hitachi is

 

 

 

 

 

 

 

 

 

 

Max. areal density (Gbits/sq. in.)

86.1

f

 

 

dedicated to providing a breadth of hard disk

Performance

 

 

 

 

 

 

 

 

 

 

drive solutions to satisfy all of today’s demanding

Data buffer (MB)

2

8

f

 

computing needs.

Rotational speed (RPM)

4260

f

 

 

 

 

 

 

 

 

 

 

 

 

How to read the Travelstar model number

Latency average (ms)

7.04

f

 

 

 

 

 

 

 

 

 

 

 

HTJ425050F9AT00 = 50 GB/8 MB buffer

Media transfer rate (Mbits/sec, max)

388

f

 

 

H = Hitachi

 

 

 

 

 

 

 

 

 

 

Interface transfer rate (MB/sec, max)

100 Ultra DMA mode-5

f

 

 

E

= Endurastar

 

 

 

 

 

16.6 PIO mode-4

 

 

 

 

 

 

 

 

 

J = J4K50 model (N = N4K50)

Seek time (read, typical) (avg. ms)

13

f

 

 

 

 

 

 

 

 

 

42 = 4200 RPM

Maximum (typical, ms)

24

f

 

 

 

 

 

 

 

 

 

50 = Full capacity — 50 GB

Minimum (typical, ms)

3

f

 

Reliability

 

 

 

 

 

50 = Capacity this model, 50 = 50 GB

 

 

 

 

 

 

(40 = 40 GB, 30 = 30 GB)

 

 

 

 

 

 

Error rate (non-recoverable)

< 1 per 10

13

bits transferred

f

 

 

 

 

 

 

 

 

 

 

 

 

F

= Generation code

Load/unload

600,000

f

 

 

9

= 9.5mm z-height

 

 

 

 

 

 

 

 

 

 

Availability

3

(hrs/day x days/wk)

 

24x7

f

 

 

 

AT = ATA interface

Power

 

 

 

 

 

 

 

 

 

 

0

= Feature code

 

 

 

 

 

 

 

 

 

 

Requirement

+5 VDC (+/-5%)

f

 

 

0

= Reserved

 

 

 

 

 

 

 

 

 

 

Startup (W, peak, max.)

6.5

f

 

 

Information and Technical Support

 

 

 

 

 

 

 

 

 

 

Read / Write (W, avg.)

2.15

f

 

 

www.hitachigst.com (Main Web site)

 

 

 

 

 

 

 

 

 

 

Low power idle (W, avg.)

0.8

f

 

 

www.hitachigst.com/partners (Partner Web site)

 

 

 

 

 

 

 

 

 

 

Standby (W, avg.)

0.15

f

 

 

 

 

 

 

 

 

North America

Sleep (W)

0.1

f

 

Physical size

 

 

 

 

 

support_usa@hitachigst.com

 

 

 

 

 

Toll free: 1 888 426-5214, Direct: 1 507 322-2370

 

 

 

 

 

 

 

 

 

 

z-height (mm)

9.5

f

 

 

 

 

 

 

 

 

 

Asia Pacific

Dimensions (width x depth, mm)

70 x 100

f

 

 

 

 

support_ap@hitachigst.com / 65 6840 9595

Weight (g, typ.)

95

f

 

Environmental (operating)

 

 

 

 

 

EMEA and UK

Ambient temperature

-30° to 85° C

-16o to 70o C

 

support_uk@hitachigst.com / 44 20 7133 0032

 

 

 

 

 

 

Altitude (m)

-300 to 5,000

-300 to 3,000

 

Germany

 

 

 

 

 

 

 

 

 

 

Shock (half-sine wave)

250G (2ms)

f

 

 

support_uk@hitachigst.com / 49 6929 993601

 

 

 

 

 

 

 

 

 

 

Vibration (sine wave)

Up to 3G (10-500Hz)

f

 

 

Program Support

Environmental (non-operating)

 

 

 

 

 

 

 

 

 

 

Partners FirstProgram

 

 

 

 

 

 

 

 

 

 

Ambient temperature

-40° to 95° C

f

 

 

channelpartners@hitachigst.com

 

 

 

 

 

 

 

 

 

 

Altitude (m)

-300 to 15,000

f

 

 

 

 

 

 

 

 

 

 

 

 

Shock (half-sine wave)

800G (1ms)

f

 

 

 

 

 

 

 

 

 

 

 

Vibration (sine wave)

Up to 5G (10-500Hz)

f

 

 

 

 

Acoustics (A-weighted sound power)

 

 

 

 

 

1

One GB is equal to one billion bytes when referring to hard drive

 

 

 

 

 

 

 

 

 

 

 

capacity. Accessible capacity may be less.

Idle (Bels, typ.)

2.4

f

 

 

 

2

Portion of buffer capacity used for drive firmware.

 

 

 

 

 

 

 

 

 

 

3

Intended for less than 20 percent duty cycle industrial applications

Op (Bels, typ.)

3.0

f

 

 

 

and other non mission critical applications.

 

 

 

Hitachi Global Storage Technologies’ trademarks are authorized for use in countries and jurisdictions in which Hitachi Global Storage Tech-

© 2007 Hitachi Global Storage Technologies

nologies has the right to use, market and advertise the brands. Contact Hitachi Global Storage Technologies for further information. Hitachi

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Global Storage Technologies shall not be liable to third parties for unauthorized use of Hitachi Global Storage Technologies trademarks..

3403 Yerba Buena Road

 

 

 

 

 

 

 

 

 

 

References in this publication to Hitachi Global Storage Technologies’ products, programs, or services do not imply that Hitachi Global

San Jose, CA 95135 USA

Storage Technologies intends to make these available in all countries in which it operates.

 

 

Produced in the United States 8/06. Revised 3/08.

 

 

 

 

 

 

 

 

 

 

Product specifications provided are sample specifications and do not constitute a warranty. Information is true as of the date of

All rights reserved.

publication and is subject to change. Actual specifications for unique part numbers may vary. Please visit the Support section of our website,

 

 

 

www.hitachigst.com/support, for additional information on product specifications. Photographs may show design models.

Endurastarand Partners Firstare trademarks of Hitachi Global Storage Technologies.

DSEJ425007EN-02

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Hitachi J4K50, N4K50 manual Specifications, Hitachi quality and service

N4K50, J4K50 specifications

Hitachi's J4K50 and N4K50 are advanced hard disk drives designed to meet the increasing storage demands of modern enterprise applications. Geared towards data-intensive environments, both models leverage innovative technologies to optimize performance, reliability, and energy efficiency.

The J4K50 series is notable for its 4TB storage capacity, providing ample room for expansive data requirements. It features a 7200 RPM spindle speed, which ensures rapid data access and transfer rates, making the J4K50 ideal for applications such as large databases, backup solutions, and virtualization. The drive implements SATA III interface, enabling faster data throughput of up to 6 Gbps, which significantly enhances overall system responsiveness.

On the other hand, the N4K50, while also showcasing a 7200 RPM spindle speed, is tailored more towards nearline and cloud storage solutions. This model excels in environments where data integrity and longevity are paramount. It incorporates advanced error recovery features and a robust firmware design that minimizes downtime and maximizes accessibility. The N4K50 typically provides a similar 4TB capacity, yet its optimized architecture is particularly suited for large-scale data storage, big data analytics, and archiving.

Both models are equipped with Hitachi's exclusive technologies that bolster data integrity. The Integrated Cache (IC) system enhances read and write performance, allowing for a seamless flow of data even during high demand scenarios. Additionally, Advanced Format technology is utilized, which increases the sector size from 512 bytes to 4 KB, offering improved storage efficiency and error correction capabilities.

Energy efficiency is a hallmark of the J4K50 and N4K50 series. The drives come with features such as low power consumption, which not only reduces operating costs but also makes them a more sustainable choice for enterprises concerned with their environmental footprint.

In conclusion, the Hitachi J4K50 and N4K50 hard disk drives represent a perfect blend of capacity, performance, and reliability, making them invaluable assets for organizations aiming to improve their data storage solutions. With their tailored features and advanced technologies, they cater to diverse enterprise needs, from general-purpose storage to specialized applications requiring enhanced durability and efficiency.